Bag construction



Dec. 13,1927. 1,652,679

E. O. NELSON BAG CONSTRUCTION Filed Jar 1. 50, 1926 INVENTOR.

f/wnj 021/67 776/601! 7 BY I q 09% v' e ATTORNE Patented Dec. 13, 1 927.

UNITED STATES PATENT orrlcr.

ELVING OVID NELSON, F MIDLAND, MICHIGAN, ASSIGNOR TO THE DOW CHEMICAL COMPANY, OF MIDLAND, MICHIGAN, A CQRPORATION OF MICHIGAN.

BAG cons'rnuc'rron. I

Application filed January 30, 1926. Serial No. 84,956.

.This invention relating, as indicated, to bags has more particular reference to bags of waterproof or moisture-proof character, and it is among the objects of the invention 6 to provide a construction in which entrance of moisture is prevented, not only through the walls but also at the seams. i

To the accomplishment of the foregoing and related ends, the invention, then, con- 10 sists of the means hereinafter described andv particularly pointed out in the claims, the

Y annexed drawing and the following descrip tion setting forth but one of various ways in which the-principle of the invention may 16 be utilized.

In said annexed drawing Fig. 1 is a view in side elevation, broken away in part, showing one embodiment of the invention; and Fig. 2 is a sectional de- 20 tail taken on the line 11-11, Fig. 1.

In its general aspects the construction includes a bag wall made up with seams as desired, and a waterproofed element guarding the seams internally. Preferably the 25. seams are located at the sides and not at the bottom. The reference numeral W in the drawing designates a bag wall, made up of- 88 being folded as at 5 and further folded centrally as at 6 in a sort of accordion-like fold or pleat, and the folded portions where adlacent to the bag wall are cemented thereto y a water-proofing cementing agent. A 60 slmilar waterproofing cementing agent is desirabl employed between the layers 1. and

3. T is material may be of petroleum pitch, natural asphalt, boiled linseed oil, tung oil, or in some instances casein cement. Paper of variousgrades may be emplo ed, most advantageously however, a crepe or crinkled paper, best of sulphate Other modes of applying the principle of mymvention may be employed instead of the one here explained, change being made in the form or construction, provided the elements stated by any of the following claims or the equivalent of such stated elements be employed.

I. therefore particularly point out and dis tinctly claim as my invention l. A bag seamed along its edge and including a layer of textile material and a layer of paper with water proofing, and a strip of waterproofed material having longitudinal double reversed folds extending along the seam and being cemented to the side walls interiorly of such seam.

2. A bag seamed along the edges but not seamed at the bottom, and including a layer of textile material and alayer of paper with waterproofing, and a strip of waterproofed material having longitudinal double reversed folds extending along the seams and being cemented to the side walls interiorly of such seam.

3. A bag seamed along the ed es but not seamed at the bottom, and inclu ing a layer of textile material, and a layer of paper with waterproofing, and along each seam a strip having its edges in the seam and having longitudinal double reversed folds centrally and being cemented to the side walls interiorly of such seam.

4. A bag'seamed along the edges but not seamed at the bottom, and including a layer of textile material, and a layer of paper with waterproofing, and along each seam a strip of'waterproofed material having its edges in the seam and having longitudinal double reversed folds centrally and being cemented to the side walls interiorly of the seam. i v

lgggned by me, this 27 day of January,

ELVING ovm NELSON. 

